Beyond Hawking evaporation of black holes formed by dark matter in compact stars

TL;DR

This paper explores how the memory burden effect influences black hole evolution formed by dark matter in neutron stars, significantly extending constraints on dark matter properties.

Contribution

It introduces the impact of the memory burden effect on black holes formed by dark matter in neutron stars, revealing extended constraints on dark matter parameters.

Findings

Memory burden effect suppresses black hole evaporation rate.

Constraints on dark matter nucleon scattering cross section are extended.

Implications for dark matter detection in neutron stars.

Abstract

The memory burden effect is an explicit resolution to the information paradox by which an evaporating black hole acquires quantum hair, which then suppresses its rate of mass loss with respect to the semi-classical Hawking rate. We show that this has significant implications for particle dark matter that captures in neutron stars and forms black holes that go on to consume the host star. In particular, we show that constraints on the nucleon scattering cross section and mass of spin-0 and spin-1/2 dark matter would be extended by several orders of magnitude.